CN109699066B - Antenna frequency band switching method and device and mobile terminal - Google Patents
Antenna frequency band switching method and device and mobile terminal Download PDFInfo
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- CN109699066B CN109699066B CN201811599401.8A CN201811599401A CN109699066B CN 109699066 B CN109699066 B CN 109699066B CN 201811599401 A CN201811599401 A CN 201811599401A CN 109699066 B CN109699066 B CN 109699066B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non-transmission
- H04W52/288—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non-transmission taking into account the usage mode, e.g. hands-free, data transmission or telephone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3833—Hand-held transceivers
- H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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Abstract
本发明提供了一种天线频段切换方法、装置及移动终端，涉及移动通信技术领域，该方法包括：当多个天线同时处于通信状态时，实时监听接近触发信号；当监听到接近触发信号时，分别获取各个天线的频段信息；判断频段信息的组合是否符合安全标准；如果否，将至少一个天线从当前频段切换至目标频段，目标频段的传导功率小于当前频段的传导功率。本发明可以在不影响移动终端OTA性能的前提下有效降低共存SAR值，不影响通信性能，提高了用户的体验度。
The present invention provides an antenna frequency band switching method, device and mobile terminal, and relates to the technical field of mobile communication. The method includes: when multiple antennas are in a communication state at the same time, monitoring a proximity trigger signal in real time; when monitoring the proximity trigger signal, Obtain the frequency band information of each antenna separately; judge whether the combination of frequency band information meets the safety standard; if not, switch at least one antenna from the current frequency band to the target frequency band, and the conducted power of the target frequency band is smaller than that of the current frequency band. The invention can effectively reduce the coexistence SAR value on the premise of not affecting the OTA performance of the mobile terminal, does not affect the communication performance, and improves the user experience.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to an antenna frequency band switching method, an antenna frequency band switching device, and a mobile terminal.
Background
In order to pursue fashionability of appearance, comprehensiveness of functions, and convenience of carrying of a mobile terminal, a space of an antenna is continuously compressed, and a radiation hot spot of the antenna is concentrated, so that a coexistence SAR (specific absorption Rate) value is continuously increased. Meanwhile, with the development of mobile communication, the use scenes of multiple antennas of the mobile terminal are increased, the SAR value is further improved, and the risk that a human body is excessively radiated is increased.
Conventional solutions generally employ an active SAR reduction: when the multiple antennas work simultaneously and a specific scene (such as human body approaching) is sensed through the sensor, the radio frequency output power is actively reduced. However, the above method generally uses the maximum SAR value in all frequency bands of each antenna as a reference, and the conducted power is backed off to reduce the coexistence SAR value to within the safety standard, and for some frequency band combinations with small coexistence SAR values and frequency band combinations without the need of backing off the conducted power, the conducted power is also backed off, so that the communication performance is sacrificed, and the actual experience of the user is reduced.
Disclosure of Invention
In view of this, the present invention provides an antenna frequency band switching method, an antenna frequency band switching apparatus, and a mobile terminal, which effectively reduce a coexistence SAR value, do not affect communication performance, and improve user experience.
In a first aspect, an embodiment of the present invention provides an antenna frequency band switching method, which is applied to a mobile terminal, and the method includes: monitoring an approaching trigger signal in real time when a plurality of antennas are in a communication state at the same time; when the approach trigger signal is monitored, respectively acquiring frequency band information of each antenna; judging whether the combination of the frequency band information meets the safety standard or not; if not, switching at least one antenna from the current frequency band to a target frequency band, wherein the conduction power of the target frequency band is smaller than that of the current frequency band.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the step of determining whether the combination of the frequency band information meets a safety standard includes: searching a safety identification corresponding to the combination of the frequency band information in a prestored corresponding relation between the combination of the multi-antenna frequency band information and the safety identification; the security identification comprises: a first identifier for indicating a superstandard and a second identifier for indicating security; and if the found safety identification is the first identification, determining that the combination of the frequency band information does not meet the safety standard.
With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where a setting process of a correspondence between a combination of multi-antenna frequency band information and a security identifier includes: when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is larger than a safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a first identifier, and storing the corresponding relation between the combination and the safety identifier; and when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is not larger than the safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a second identifier, and storing the corresponding relation between the combination and the safety identifier.
With reference to one of the first to second possible implementation manners of the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the multiple antennas at least include a first antenna and a second antenna, and the step of switching a current frequency band of at least one of the antennas to a target frequency band includes: and switching the first antenna from the current frequency band to a first target frequency band and/or switching the second antenna from the current frequency band to a second target frequency band according to a pre-stored switching rule.
With reference to one of the first to second possible implementation manners of the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the multiple antennas at least include a first antenna and a second antenna, and the step of switching a current frequency band of at least one of the antennas to a target frequency band includes: switching the first antenna from a current frequency band to a first target frequency band according to a first switching rule stored in advance; the first switching rule comprises a switching corresponding relation between a current frequency band of the first antenna and a first target frequency band; switching the second antenna from the current frequency band to a second target frequency band according to the first target frequency band and a second pre-stored switching rule; the second switching rule includes a switching correspondence between a current frequency band of the second antenna and a second target frequency band when the first antenna is in the first target frequency band.
In a second aspect, an embodiment of the present invention provides an antenna frequency band switching apparatus, which is applied to a mobile terminal, and the apparatus includes: the monitoring module is used for monitoring the proximity trigger signal in real time when the plurality of antennas are in a communication state at the same time; the acquisition module is used for respectively acquiring the frequency range information of each antenna when the approach trigger signal is monitored; the judging module is used for judging whether the combination of the frequency band information meets the safety standard or not; and the switching module is used for switching at least one antenna from the current frequency band to a target frequency band if the antenna is not switched to the target frequency band, and the conduction power of the target frequency band is smaller than that of the current frequency band.
With reference to the second aspect, an embodiment of the present invention provides a first possible implementation manner of the second aspect, where the determining module is further configured to: searching a safety identification corresponding to the combination of the frequency band information in a prestored corresponding relation between the combination of the multi-antenna frequency band information and the safety identification; the security identification comprises: a first identifier for indicating a superstandard and a second identifier for indicating security; and if the found safety identification is the first identification, determining that the combination of the frequency band information does not meet the safety standard.
With reference to the first possible implementation manner of the second aspect, an embodiment of the present invention provides a second possible implementation manner of the second aspect, where the apparatus further includes a generating module, configured to: when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is larger than a safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a first identifier, and storing the corresponding relation between the combination and the safety identifier; and when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is not larger than the safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a second identifier, and storing the corresponding relation between the combination and the safety identifier.
With reference to one of the first to second possible implementation manners of the second aspect, an embodiment of the present invention provides a third possible implementation manner of the second aspect, where the multiple antennas include at least a first antenna and a second antenna, and the switching module is further configured to: switching the first antenna from a current frequency band to a first target frequency band according to a first switching rule stored in advance; the first switching rule comprises a switching corresponding relation between a current frequency band of the first antenna and a first target frequency band; switching the second antenna from the current frequency band to a second target frequency band according to the first target frequency band and a second pre-stored switching rule; the second switching rule includes a switching correspondence between a current frequency band of the second antenna and a second target frequency band when the first antenna is in the first target frequency band.
In a third aspect, an embodiment of the present invention provides a mobile terminal, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor implements the steps of the method provided in any one of the first aspect when executing the computer program
According to the antenna frequency band switching method, the antenna frequency band switching device and the mobile terminal provided by the embodiment of the invention, when a plurality of antennas are in a communication state at the same time and a human body approaches, whether the combination of frequency band information of each antenna meets the safety standard or not is judged, and when the combination does not meet the safety standard, at least one antenna is switched from the current frequency band to the target frequency band, namely, the back of conducted power is carried out, so that the coexisting SAR value can be effectively reduced on the premise of keeping better OTA (over the air) performance of the mobile terminal, the communication performance is not influenced, and the user experience degree is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flowchart of an antenna frequency band switching method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a top antenna layout of a mobile phone according to an embodiment of the present invention;
fig. 3 is a schematic top antenna layout of another mobile phone according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an antenna frequency band switching apparatus according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The mobile phone antenna is an antenna installed on a mobile phone for receiving and transmitting signals, the number of the antennas of the existing mobile phone is increasing, the number of the antennas of the existing mobile phone is more and more, the multi-antenna technology, the use of a WIFI (Wireless Fidelity-Fidelity) 2.4, 5G MIMO (Multiple-Input Multiple-Output) antenna and the realization of DBS (Direct broadcast Satellite Service) functions are realized, the application scenes of the multi-antenna are more and more, the coexistent SAR value is larger and larger, and the risk that a human body is subjected to excessive radiation is increased. When the measured SAR value is greater than the specified safety standard, there are two main conventional solutions: firstly, the matching of the antenna is adjusted, and the hot spot distribution or the antenna radiation performance of the mobile phone antenna is changed, so that the SAR value of the mobile phone antenna is reduced; secondly, the radio frequency output power under the corresponding scene is reduced by the sensor sensing the specific scene (such as the approach of the human body), thereby reducing the SAR value of the mobile phone antenna.
The disadvantages of the first solution are mainly as follows: by adjusting the matching of the antenna, the time for debugging the antenna can be increased, which is equivalent to readjusting the matched antenna, the workload of designers can be increased, and the research and development period of the product can be prolonged. Adjusting the antenna matching also degrades the OTA (Over the Air Technology) performance of the handset antenna to some extent. In addition, when the SAR value exceeds the standard, the method can not effectively solve the problem of the SAR value exceeding the standard.
The disadvantages of the second solution are mainly as follows: taking the simultaneous operation of the cellular antenna and the WIFI as an example, because the cellular antenna and the WIFI both include a plurality of frequency bands, the SAR values of the cellular antenna and the WIFI have different values, and the difference is large. The existing scheme can not identify the specific working frequency range of each antenna of the mobile phone, and usually takes the maximum SAR value in all frequency ranges as reference, and the conducted power is backed off to enable the SAR value to reach within the standard. For the coexisting frequency band combination with small coexisting SAR value or the frequency band combination without returning the conducted power, the conducted power is also returned, so that the performance of the mobile phone is sacrificed, and the actual experience of the user is reduced.
Based on this, the antenna frequency band switching method, the antenna frequency band switching device and the mobile terminal provided by the embodiment of the invention can effectively alleviate the technical problem.
To facilitate understanding of the present embodiment, first, a detailed description is given to an antenna frequency band switching method disclosed in the present embodiment.
In an embodiment of the present invention, an antenna frequency band switching method is provided, which is applied to a mobile terminal, and as shown in fig. 1, a flow diagram of the antenna frequency band switching method is provided, where the method includes the following steps:
and step S102, monitoring the approach trigger signal in real time when a plurality of antennas are in a communication state at the same time.
The plurality of antennas may include a cellular network antenna, a WiFi antenna, or a bluetooth antenna of the mobile terminal, where the cellular network antenna is in a communication state, that is, the mobile terminal is in a call, the WiFi antenna is in a communication state, that is, the WiFi antenna is in a connection communication, and the bluetooth antenna is in a communication state, that is, the bluetooth antenna is in a connection communication.
Because the mobile terminal may cause a radiation risk to a human body when approaching the human body, and the existing safety standard regulation for the antenna is also based on the SAR data when approaching the human body, when a plurality of antennas are in a communication state at the same time, an Application Processor (AP) of the mobile terminal needs to monitor an approach trigger signal in real time, and when the approach trigger signal of the sensor is monitored, it indicates that the human body approaches.
And step S104, respectively acquiring the frequency range information of each antenna when the approach trigger signal is monitored.
The existing scheme can not identify the specific working frequency band of each antenna of the mobile terminal, and usually takes the maximum SAR value in all frequency bands of each antenna as reference, and the conducted power of each antenna is respectively returned to enable the SAR value to reach within the standard, so that the performance is sacrificed. In this embodiment, when the above conditions are satisfied, the AP acquires the frequency band information of each antenna, so as to reasonably roll back the frequency band information of the antenna.
And step S106, judging whether the combination of the frequency band information meets the safety standard. If yes, ending the flow; if not, step S108 is performed.
When multiple antennas are in a communication state at the same time and the mobile terminal is triggered by proximity, it is necessary to determine whether a combination of frequency band information corresponding to each antenna at that time meets a safety standard. Whether the safety standard is met or not can be judged through the coexisting SAR value of each antenna, and when the coexisting SAR value is larger than the specified safety value, the safety standard is not met; and when the coexisting SAR value is not more than the specified safety value, the safety standard is met. In addition, whether the safety standard is met or not can be determined by a safety mark corresponding to the combination of the frequency band information, the mobile terminal can store the corresponding relation between the combination of the antenna frequency band information and the safety mark in advance, and the safety mark can be divided into two types which are respectively used for indicating safety and indicating standard exceeding. If the combination of the current frequency band information corresponds to an identifier indicating safety, determining that the combination conforms to the safety standard; and if the combination of the current frequency band information corresponds to the mark indicating the standard exceeding, determining that the safety standard is not met.
Step S108, at least one antenna is switched to the target frequency band from the current frequency band.
And the conduction power of the target frequency band is smaller than that of the current frequency band. When the combination of the frequency band information does not meet the safety standard, at least one antenna needs to be switched from the current frequency band to the target frequency band, namely, the conducted power of at least one antenna is backed off.
According to the antenna frequency band switching method provided by the embodiment of the invention, when a plurality of antennas are in a communication state at the same time and a human body approaches, whether the combination of the frequency band information of each antenna meets the safety standard or not is judged, and when the combination does not meet the safety standard, at least one antenna is switched from the current frequency band to the target frequency band, namely, the back of the conducted power is carried out, so that the coexisting SAR value can be effectively reduced on the premise of keeping better OTA (over the air) performance of the mobile terminal, the communication performance is not influenced, and the user experience is improved.
Taking the foregoing judgment of whether the identification corresponding to the combination of the frequency band information meets the safety standard as an example, the judgment process may be performed according to the following steps:
(1) and searching the safety identification corresponding to the combination of the frequency band information in the pre-stored corresponding relation between the combination of the multi-antenna frequency band information and the safety identification. The corresponding relation between the combination of the multi-antenna frequency band information and the safety identification can be generated in advance, whether the multiple antennas meet the safety standard or not when working simultaneously is represented by the safety identification, and the safety identification comprises the following steps: a first flag for indicating a violation and a second flag for indicating security. For example, whether the multiple antennas are in the communication state at the same time and meet the safety standard is tested in advance to obtain the corresponding relationship, and the specific setting process may be performed as follows:
when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is larger than the safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a first identifier, and storing the corresponding relation between the combination and the safety identifier; when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is not larger than the safety standard value, setting the identification corresponding to the combination of the multi-antenna frequency band information as a second identification, and storing the corresponding relation between the combination and the safety identification
(2) If the found safety identification is the first identification, determining that the combination of the frequency band information does not meet the safety standard; and if the searched safety identification is the second identification, determining that the combination of the frequency band information meets the safety standard.
Whether the combination of the multiple antennas meets the safety standard or not under the current condition can be judged through the searched safety identification, and when the combination does not meet the safety standard, frequency band switching is required, so that the radiation risk is reduced.
In this embodiment, a plurality of antennas are taken as the first antenna and the second antenna as an example for explanation, and when performing the frequency band switching, the step of switching the current frequency band of at least one antenna to the target frequency band may be, for example, switching the first antenna from the current frequency band to the first target frequency band, or switching the second antenna from the current frequency band to the second target frequency band, or switching both the first antenna and the second antenna according to a pre-stored switching rule. The prestored switching rule may be determined according to the conducted power or the SAR value of the antenna operating frequency band, and the target frequency bands of the first antenna and the second antenna may be determined individually or according to the target frequency bands of each other, subject to the condition that the coexisting SAR value of the first antenna and the second antenna is lower than the safety standard value.
For example, in an embodiment where the target frequency band of the second antenna is determined by the target frequency band of the first antenna, the following steps may be performed:
(1) and switching the first antenna from the current frequency band to a first target frequency band according to a first switching rule stored in advance. The first switching rule includes a switching correspondence relationship between a current frequency band of the first antenna and a first target frequency band, and when the first antenna and the second antenna are in a communication state at the same time, the frequency band of the first antenna may be switched first, and the current frequency band is switched to the first target frequency band having a lower conduction power than the current frequency band.
(2) And switching the second antenna from the current frequency band to a second target frequency band according to the first target frequency band and a second pre-stored switching rule. The second switching rule includes a switching corresponding relation between a current frequency band of the second antenna and a second target frequency band under the condition that the first antenna is in the first target frequency band. And under the condition that the first antenna is switched, determining a second target frequency band to which the second antenna needs to be switched by using the first target frequency band, and under the condition of ensuring that the second antenna meets the safety standard, aiming at ensuring the optimal communication performance of the mobile terminal.
In another embodiment of the present invention, a method for switching antenna frequency bands is further provided, which can effectively solve the problem that the coexistence SAR value of the mobile phone exceeds the standard, and is described by taking an example that a cellular antenna and a WIFI antenna are in a communication state at the same time. Referring to the schematic layout diagram of the top antenna of the mobile phone shown in fig. 2, the top of the mobile phone has 2 antennas, 20 is a cellular antenna, and 21 is a WIFI antenna.
The cellular antenna is mainly used for the communication and data services of the mobile phone, and the frequency bands supported by the cellular antenna cover low frequency, medium frequency and even high frequency, including the frequency bands of LTE B5, B8, B2, B3 and the like; WIFI antennas typically include 2.4G and 5G WIFI. For cellular antennas, SAR values for low frequencies, e.g., LTE B5, B8, are typically lower, while SAR values for medium frequencies, e.g., LTE B2, B3, are typically higher. The SAR values for WIFI antennas 2.4G and 5G are also typically much different. Therefore, the SAR values for coexistence (simultaneous operation) of two antennas include various situations, that is, any frequency band of the cellular antenna may coexist with the WIFI antenna 2.4G or 5G, and the difference of the coexistence SAR values of each combination is large. In order to reduce the influence on the OTA performance of the mobile phone, it is necessary to differentially back the conducted power, that is, to implement the power back-off of the WIFI antenna according to the working frequency band of the cellular antenna, or to implement the power back-off of the cellular antenna according to the working frequency band of the WIFI antenna.
For the coexistence of the top antennas, the backspacing triggering mechanism performs backspacing through the operation of the sensor at the upper end of the mobile phone and the WIFI. At this time, the mobile phone is assumed to be in a working scene of making a call and simultaneously using WIFI2.4G for communication, the cellular antenna works in a 2G GSM850 voice mode, and the WIFI antenna works in a 2.4G mode. When a user picks up the mobile phone to answer, the proximity sensor is triggered, and when the backspacing triggering condition is met, the cellular antenna is backspacing to a prestored target frequency band. At this time, the modem reports the current working frequency band of the cellular antenna of the mobile phone to the AP, and the AP backs up according to the frequency band written in advance (when the cellular antenna works in GSM850, the frequency band that the WIFI antenna should back up). Thus far, both the cellular antenna and the WIFI antenna implement back-off. In the backspacing process, the WiFi antenna is backspacing to different frequency bands according to the working frequency band of the cellular antenna, so that the SAR problem is solved, and meanwhile, the influence on the actual experience of a user can be reduced to the minimum.
Referring to the schematic layout of the body antenna of the 4G mobile phone shown in fig. 3, unlike the antenna of the above embodiment, 30 is a cellular antenna, and 31 is a WIFI antenna. When the cellular antenna and the WIFI antenna work and the distance sensor is triggered (indicating that a human body approaches), the mobile phone AP sends an instruction to the modem to request power backoff on the working frequency band of the current cellular antenna, and the backoff frequency band is determined according to the frequency band written into the mobile phone in advance. For the WIFI antenna, after the modem reports the working frequency band of the current cellular antenna after fallback to the AP, the WIFI antenna will fallback according to the value written in advance (when the cellular antenna works in a certain frequency band, the frequency band that the WIFI antenna should fallback). Therefore, the cellular antenna and the WIFI antenna realize backspacing and accord with safety standards.
The embodiment of the invention creatively provides a multi-antenna coexistence SAR reduction scheme, which not only can effectively solve the problem of exceeding the SAR value of the mobile phone on the premise of not influencing the OTA performance of the mobile phone, but also effectively reduces the sacrifice of the SAR on the user experience and the mobile phone performance and effectively improves the user experience. The above embodiment can also realize the compatibility of a plurality of regional SAR standards, and meet the FCC/CE/IC/MIC/OFCA/Taile standard.
In another embodiment of the present invention, an antenna band switching apparatus is further provided, which is applied to a mobile terminal, and as shown in fig. 4, the apparatus includes:
a monitoring module 41, configured to monitor an approach trigger signal in real time when multiple antennas are in a communication state at the same time;
an obtaining module 42, configured to obtain frequency band information of each antenna when an approach trigger signal is monitored;
a judging module 43, configured to judge whether the combination of the frequency band information meets a safety standard;
and a switching module 44, configured to switch, if not, the at least one antenna from the current frequency band to a target frequency band, where a conducted power of the target frequency band is smaller than a conducted power of the current frequency band.
According to the antenna frequency band switching device provided by the embodiment of the invention, when a plurality of antennas are in a communication state at the same time and a human body approaches, whether the combination of the frequency band information of each antenna meets the safety standard or not is judged, and when the combination does not meet the safety standard, at least one antenna is switched from the current frequency band to the target frequency band, namely, the back of the conducted power is carried out, so that the coexisting SAR value can be effectively reduced on the premise of keeping better OTA (over the air) performance of the mobile terminal, the communication performance is not influenced, and the user experience is improved.
In another embodiment, the determining module is further configured to: searching a safety identification corresponding to the combination of the frequency band information in a pre-stored corresponding relation between the combination of the multi-antenna frequency band information and the safety identification; the security identification comprises: a first identifier for indicating a superstandard and a second identifier for indicating security; and if the searched safety identification is the first identification, determining that the combination of the frequency band information does not meet the safety standard.
In another embodiment, the apparatus further comprises a generating module configured to: when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is larger than the safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a first identifier, and storing the corresponding relation between the combination and the safety identifier; and when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is not larger than the safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a second identifier, and storing the corresponding relation between the combination and the safety identifier.
In another embodiment, the plurality of antennas includes at least a first antenna and a second antenna, and the switching module is further configured to: switching a first antenna from a current frequency band to a first target frequency band according to a first switching rule stored in advance; the first switching rule comprises a switching corresponding relation between a current frequency band of the first antenna and a first target frequency band; switching the second antenna from the current frequency band to a second target frequency band according to the first target frequency band and a second pre-stored switching rule; the second switching rule includes a switching correspondence between a current frequency band of the second antenna and a second target frequency band when the first antenna is in the first target frequency band.
In another embodiment, the plurality of antennas includes at least a first antenna and a second antenna, and the switching module is further configured to: and switching the first antenna from the current frequency band to the first target frequency band and/or switching the second antenna from the current frequency band to the second target frequency band according to a pre-stored switching rule.
The antenna frequency band switching device provided by the embodiment of the invention has the same technical characteristics as the antenna frequency band switching method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
The embodiment of the present invention further provides a mobile terminal, which includes a memory and a processor, where the memory stores a computer program that can be run on the processor, and the processor implements the steps of the antenna frequency band switching method provided in the foregoing embodiment when executing the computer program.
Fig. 5 is a schematic diagram of a mobile terminal, which includes a Radio Frequency (RF) circuit 510, a memory 520, an input unit 530, a display unit 540, a sensor 550, an audio circuit 560, a wireless fidelity (WiFi) module 570, a processor 580, and a power supply 590.
For convenience of explanation, fig. 5 shows only portions related to the embodiment of the present invention. It should be understood that the configuration of the mobile terminal shown in fig. 5 is not intended to be limiting of the mobile terminal and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
The following describes each component of the mobile terminal in detail with reference to fig. 5:
the RF circuit 510 is used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, receives downlink information of a base station and then processes the received downlink information to the processor 580; uplink data may also be transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like.
The memory 520 may be used to store software programs and modules, such as the method for adjusting the antenna radiation performance and the program instructions/modules corresponding to the mobile terminal in the embodiment of the present invention, and the processor 580 may execute various functional applications and data processing of the mobile terminal, such as the charging control method provided in the embodiment of the present invention, by running the software programs and modules stored in the memory 520. The memory 520 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the mobile terminal, and the like. Further, the memory 520 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The input unit 530 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the input unit 530 may include a touch panel 531, such as a touch screen, and other input devices 532, and the other input devices 532 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
The display unit 540 may be used to display information input by the user or information provided to the user and various menus of the mobile terminal. The Display unit 540 may include a Display panel 541, and optionally, the Display panel 541 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-Emitting Diode (OLED), or the like. Further, the touch panel 531 may cover the display panel 541, and when the touch panel 531 detects a touch operation on or near the touch panel 531, the touch panel is transmitted to the processor 580 to determine the type of the touch event, and then the processor 580 performs a process according to the type of the touch event. Although the touch panel 531 and the display panel 541 are shown in fig. 5 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 531 and the display panel 541 may be integrated to implement the input and output functions of the mobile terminal.
The mobile terminal may also include at least one sensor 550, such as a light sensor, a motion sensor, and other sensors.
WiFi belongs to a short-distance wireless transmission technology, and the mobile terminal can help a user send and receive e-mails, browse webpages, access streaming media and the like through the WiFi module 570, and provides wireless broadband internet access for the user. Although fig. 5 shows the WiFi module 570, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The processor 580 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 520 and calling data stored in the memory 520, thereby performing overall monitoring of the mobile terminal. Alternatively, processor 580 may include one or more processing units; preferably, the processor 580 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 580.
The mobile terminal also includes a power supply 590 (e.g., a battery) for powering the various components, which may be logically coupled to the processor 580 via a power management system that may be used to manage charging, discharging, and power consumption.
It will be appreciated that the configuration shown in fig. 5 is merely illustrative, and that the mobile terminal may include more or fewer components than shown in fig. 5, or may have a different configuration than shown in fig. 5. The components shown in fig. 5 may be implemented in hardware, software, or a combination thereof.
The charging control method, the charging control device, and the computer program product of the mobile terminal provided in the embodiments of the present invention include a computer-readable storage medium storing a program code, where instructions included in the program code may be used to execute the method described in the foregoing method embodiments, and specific implementation may refer to the method embodiments, and will not be described herein again.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the mobile terminal and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the following embodiments are merely illustrative of the present invention, and not restrictive, and the scope of the present invention is not limited thereto: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An antenna frequency band switching method is applied to a mobile terminal, and comprises the following steps:
monitoring an approaching trigger signal in real time when a plurality of antennas are in a communication state at the same time; the plurality of antennas comprise at least two of a cellular network antenna, a WiFi antenna and a Bluetooth antenna of the mobile terminal;
when the approach trigger signal is monitored, respectively acquiring frequency band information of each antenna;
judging whether the combination of the frequency band information meets the safety standard or not based on the corresponding relation between the prestored combination of the multi-antenna frequency band information and the safety identification; wherein the setting of the security identifier is related to a coexistence SAR value corresponding to a combination of multi-antenna frequency band information;
if not, switching at least one antenna from the current frequency band to a target frequency band, wherein the conduction power of the target frequency band is smaller than that of the current frequency band.
2. The method of claim 1, wherein the step of determining whether the combination of the frequency band information meets a safety standard comprises:
searching a safety identification corresponding to the combination of the frequency band information in a prestored corresponding relation between the combination of the multi-antenna frequency band information and the safety identification; the security identification comprises: a first identifier for indicating a superstandard and a second identifier for indicating security;
and if the found safety identification is the first identification, determining that the combination of the frequency band information does not meet the safety standard.
3. The method according to claim 2, wherein the setting process of the combination of the multi-antenna frequency band information and the security identifier correspondence relationship comprises:
when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is larger than a safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a first identifier, and storing the corresponding relation between the combination and the safety identifier;
and when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is not larger than the safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a second identifier, and storing the corresponding relation between the combination and the safety identifier.
4. The method according to any of claims 1-3, wherein the plurality of antennas comprises at least a first antenna and a second antenna, and the step of switching the current frequency band of at least one of the antennas to the target frequency band comprises:
and switching the first antenna from the current frequency band to a first target frequency band and/or switching the second antenna from the current frequency band to a second target frequency band according to a pre-stored switching rule.
5. The method according to any of claims 1-3, wherein the plurality of antennas comprises at least a first antenna and a second antenna, and the step of switching the current frequency band of at least one of the antennas to the target frequency band comprises:
switching the first antenna from a current frequency band to a first target frequency band according to a first switching rule stored in advance; the first switching rule comprises a switching corresponding relation between a current frequency band of the first antenna and a first target frequency band;
switching the second antenna from the current frequency band to a second target frequency band according to the first target frequency band and a second pre-stored switching rule; the second switching rule includes a switching correspondence between a current frequency band of the second antenna and a second target frequency band when the first antenna is in the first target frequency band.
6. An antenna frequency band switching device, applied to a mobile terminal, the device comprising:
the monitoring module is used for monitoring the proximity trigger signal in real time when the plurality of antennas are in a communication state at the same time; the plurality of antennas comprise at least two of a cellular network antenna, a WiFi antenna and a Bluetooth antenna of the mobile terminal;
the acquisition module is used for respectively acquiring the frequency range information of each antenna when the approach trigger signal is monitored;
the judging module is used for judging whether the combination of the frequency band information meets the safety standard or not based on the corresponding relation between the prestored combination of the multi-antenna frequency band information and the safety identification; wherein the setting of the security identifier is related to a coexistence SAR value corresponding to a combination of multi-antenna frequency band information;
and the switching module is used for switching at least one antenna from the current frequency band to a target frequency band if the antenna is not switched to the target frequency band, and the conduction power of the target frequency band is smaller than that of the current frequency band.
7. The apparatus of claim 6, wherein the determining module is further configured to:
searching a safety identification corresponding to the combination of the frequency band information in a prestored corresponding relation between the combination of the multi-antenna frequency band information and the safety identification; the security identification comprises: a first identifier for indicating a superstandard and a second identifier for indicating security;
and if the found safety identification is the first identification, determining that the combination of the frequency band information does not meet the safety standard.
8. The apparatus of claim 7, further comprising a generation module configured to:
when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is larger than a safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a first identifier, and storing the corresponding relation between the combination and the safety identifier;
and when the coexisting SAR value corresponding to the combination of the multi-antenna frequency band information is not larger than the safety standard value, setting the identifier corresponding to the combination of the multi-antenna frequency band information as a second identifier, and storing the corresponding relation between the combination and the safety identifier.
9. The apparatus of any of claims 6-8, wherein the plurality of antennas comprises at least a first antenna and a second antenna, and wherein the switching module is further configured to:
switching the first antenna from a current frequency band to a first target frequency band according to a first switching rule stored in advance; the first switching rule comprises a switching corresponding relation between a current frequency band of the first antenna and a first target frequency band;
switching the second antenna from the current frequency band to a second target frequency band according to the first target frequency band and a second pre-stored switching rule; the second switching rule includes a switching correspondence between a current frequency band of the second antenna and a second target frequency band when the first antenna is in the first target frequency band.
10. A mobile terminal comprising a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor implements the steps of the method according to any one of claims 1 to 5 when executing the computer program.
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| CN111211851B (en) * | 2019-12-23 | 2022-05-06 | 京信网络系统股份有限公司 | Frequency band switching method and device, computer equipment and computer readable storage medium |
| CN111245983A (en) * | 2020-01-09 | 2020-06-05 | Oppo广东移动通信有限公司 | Antenna control method and device, electronic equipment and computer readable storage medium |
| CN111885692B (en) * | 2020-07-20 | 2023-12-12 | Tcl通讯（宁波）有限公司 | SAR value adjustment method and device and mobile terminal |
| CN113131958B (en) * | 2021-04-21 | 2022-04-22 | Oppo广东移动通信有限公司 | Antenna control method, antenna control device, storage medium and electronic equipment |
| CN113630142A (en) * | 2021-09-09 | 2021-11-09 | 上海闻泰电子科技有限公司 | Signal transmission method and signal transmission device |
| CN114978225B (en) * | 2022-05-09 | 2023-12-26 | Oppo广东移动通信有限公司 | Control method, control device, control terminal, control program, storage medium, and computer program product |
| CN116684950A (en) * | 2023-07-07 | 2023-09-01 | 纳欣科技有限公司 | Power back-off method, device, equipment and storage medium |
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Effective date of registration: 20250220 Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Country or region after: China Address before: 518000 Room 201, building A, 1 front Bay Road, Shenzhen Qianhai cooperation zone, Shenzhen, Guangdong Patentee before: ONEPLUS TECHNOLOGY (SHENZHEN) Co.,Ltd. Country or region before: China |